[SOLVED] I'm looking for SOL Argus B2410 repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my SOL Argus B2410. It's started acting up, and I'm looking for a detailed service manual with boardviews and schematics to properly diagnose and repair it. I need to take precise voltage measurements around the board, so having the right documentation would be very helpful.

Thanks in advance for your help.

Selected Answer

I actually found that service manual on a tech Discord server a while back. A really helpful member there shared a direct link to their blog and I've saved it. I'm happy to pass it along here. Hopefully, these boardviews and schematics help you fix your phone, just like they got me through my repair. Looks like we have the same model.

@Madeleine

Absolute legend! That's exactly the info I was searching for. This is going to save me so much time probing in the dark. Seriously, thanks a ton for sharing the link!

Hi there,

I also have the SOL Argus B2410 and just downloaded the manual you shared. I'm pretty new to board-level phone repair, and this is a bit intimidating with all the tiny test points and the schematics. Could you point me in the right direction on how to start troubleshooting this ? Any advice on the first few things I should check would be a massive help.

Thanks so much for your time

General advices: start by checking the voltage at the battery connector on the board. With a known-good battery connected, you should see a steady voltage between 3.7V and 4.2V. After that, a great next step is to check the main power management IC (PMIC) for shorts. Using your multimeter in diode mode, check for shorts on the large input capacitors surrounding the PMIC.

Here are a few useful references for troubleshooting your device:
https://www.ifixit.com/Answers/View/238886/How+to+fix+a+bad+connection+on+the+earphone+jack
Take a look at comment #683
Also, this : https://xdaforums.com/t/device-freezing-device-crashing-two-different-devices.3486485/.
You can also check this video starting from minute 10:

The SOL Argus B2410 service manual and boardviews from the link above were exactly what I've been searching for. I couldn't find a complete, free copy anywhere else. Seriously, thank you for sharing this you're a lifesaver!

Hi everyone, I'm working on a SOL Argus B2410 with a no power issue and need some guidance with my measurements.
I'm detecting 3.3V on the VREG_MAIN line (pin 1 of the PMIC), which looks good, but I'm getting 0V on the VDD_CPU line (pin 8) where the schematics indicate I should see about 0.9V.
Since this is a core voltage for the application processor, could this missing rail be why the device shows no signs of life?
What's the best procedure to diagnose this further? Should I check for shorts on the CPU rail first, or look at the PMIC's enable signals?
I've already verified the main 3.3V and 1.8V power rails are present and stable.

My SOL Argus B2410 was working perfectly until yesterday when it suddenly went completely dead. Now it won't respond to the power button, doesn't vibrate, and shows no signs of life even when connected to a charger. I'm worried there might be a serious issue.

I have a decent multimeter, a basic soldering iron, and a healthy dose of patience. While I've successfully replaced iPhone batteries and charging ports, this will be my first attempt at actual diagnosis. The sheer density of BGA chips and microscopic components is honestly a bit overwhelming.

I'm particularly curious about the alcohol trick I've seen online where you apply isopropyl to the board and look for evaporation hotspots to locate shorts. Is this actually a reliable method for beginners, or are there better approaches I should try first with just a multimeter?

I learned this lesson the hard way last month with mine, it was declared "dead" by two different shops. The phone showed absolutely no signs of life - no charging indicator, no vibration, nothing. Before diving into complex board work, I decided to try one more basic test: wireless charging.

To my complete surprise, it actually heated up on the charging pad! This single discovery completely changed my diagnostic path. It turned out the issue wasn't with the main board or processor, but with the notoriously fragile USB-C port that had failed completely. A $15 replacement part and some careful soldering brought it back to life.

The moral? Always exhaust every external testing method before opening the device. Test wireless charging if available, try different charging methods, and don't assume the worst case scenario. Sometimes the most "dead" devices have the simplest solutions hiding in plain sight.

I suspect my issue might be related to that cheap, third-party fast charger I used at the airport last week... Now the device gets extremely hot during charging, the screen flickers at low brightness, and sometimes it randomly shuts down at 30% battery. Could this have damaged the power management IC or battery calibration?

If your SOL Argus B2410 starts acting up, random reboots, fast battery drain, or connectivity issues, there are several diagnostic steps you can take before assuming the worst:

• Check your charging habits: Using poor-quality chargers or wireless pads can gradually damage your battery and charging circuit, leading to unpredictable behavior.
• Inspect the physical components: A slightly damaged charging port, worn battery, or even accumulated pocket lint can cause issues that seem like major hardware failures.
• Monitor temperature patterns: If your phone gets unusually hot during specific tasks (like camera use or gaming), it could point to a failing component rather than a software issue.
• Use diagnostic tools wisely: Ampere for battery health, phone diagnostic codes (*#0*# on many models), and a thermal camera can reveal problems without opening the device.
• Know when to stop: If you see liquid damage indicators tripped or smell burnt electronics, it's time to consult a professional before causing irreversible damage.

Also visit this link it may help : https://www.ifixit.com/Answers/View/834829/no+envia+video+la+pantalla

Here's what I discovered on forums and technical databases:

Extremely Dim Screen: The display is barely visible, often requiring a flashlight held at an angle to see content. Ensure plenty of space for the iron stand and for the hot air gun's nozzle and power cable. With the right tools, a compatible replacement part, and a good dose of patience, replacing a cracked screen is a repair that is achievable for many DIY enthusiasts, offering significant savings over professional repair services or the cost of a new device. If the problem persists and no external factors or obvious damage are found, the issue likely lies internally, typically with the display assembly itself or its connection to the mainboard. Display Clamps or Rubber Bands: For holding the new screen in place while the adhesive cures. Reset Network Settings: This will reset Wi-Fi, Bluetooth, and cellular network settings to their factory defaults. If they are stripped, try a slightly larger screw or use a tiny drop of thread locker (non-permanent) to secure them. To systematically analyze smartphone RAM corruption symptoms, a structured diagnostic approach is essential, primarily focused on distinguishing between software-induced problems and true hardware faults: New Audio Jack Board/Flex Cable Assembly: Crucially, obtain the correct replacement part specifically for your phone model. Conductive Paint/Sprays: Less common for DIY smartphone repair due to mess and precise application difficulty, but available for creating conductive surfaces on plastic housings. Overhead Lighting: Ensure your workspace is brightly and evenly lit, minimizing shadows. If the OIS issue is resolved and all cameras function correctly, proceed to full reassembly. Using your Phillips screwdriver, remove all screws holding down any shields or mid-frame components that obstruct access to the camera. A thermal camera can quickly identify hot spots on the logic board, indicating the location of the short. Thermal Camera: For quickly identifying hot spots on the motherboard under power, indicating the location of the leaking component. Android: Settings > System > Reset options > Erase all data (factory reset). A loose connection is a common cause of intermittent or complete failure. Fixing a "No SIM" error can range from a quick software toggle to a complex micro-soldering repair. This heat is generated from the charging circuit, the battery itself, and resistance in the charging cable. This method requires micro-soldering skills and a hot air rework station. Verify New Motherboard Status: Ensure the replacement motherboard is a "blank" or "service" part, intended for IMEI programming. Re-seating: Disconnect and then carefully re-seat the flex cable connectors on both the display and the motherboard side. Component Transfer: Many replacement displays are "bare" and require transferring components (earpiece, front camera, sensors, home button) from the old screen. App Interference: Occasionally, a third-party app that interferes with USB operations (e.g., file managers with specific USB drive support) can cause issues. IC Replacement: If a fault is traced to a specific IC, it would require micro-soldering to replace it. Conformal coating creates a hydrophobic barrier, repelling water and preventing it from reaching sensitive components and solder joints. Charging Port/Headphone Jack: Check for proper alignment and cleanliness. Integrated directly onto the logic board (less common for a separate antenna component, but the transceiver chip is always on the board). Speakerphone Use: Using speakerphone in a reflective room can cause echoes. If the phone is in a hot environment (e.g., direct sunlight, under a pillow, in a hot car), the phone's internal thermal management system will deliberately slow down charging to prevent overheating and potential damage to the battery and other components.

@Steven, Not sure what you're trying to say but ok :)